JP2001093177A5 - - Google Patents
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- JP2001093177A5 JP2001093177A5 JP1999269136A JP26913699A JP2001093177A5 JP 2001093177 A5 JP2001093177 A5 JP 2001093177A5 JP 1999269136 A JP1999269136 A JP 1999269136A JP 26913699 A JP26913699 A JP 26913699A JP 2001093177 A5 JP2001093177 A5 JP 2001093177A5
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- JP
- Japan
- Prior art keywords
- objective lens
- drive
- optical disc
- elastic support
- tilting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003287 optical Effects 0.000 claims description 26
- 230000004907 flux Effects 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 description 1
Description
【発明の名称】対物レンズ駆動装置ならびにそれを用いた光ディスク装置 [Title of the Invention] An objective lens driving device and an optical disk device using the same.
【００１３】
本発明は上記課題を解決するためになされたもので、各駆動コイルへの電流供給を導電
性弾性支持部材にて行い、安定した動作特性を得られる傾動可能な対物レンズ駆動装置ならびにそれを用いた光ディスク装置を実現することを目的としている。0013
The present invention has been made to solve the above problems, and uses a tiltable objective lens driving device capable of obtaining stable operating characteristics by supplying a current to each driving coil with a conductive elastic support member, and using the same. The purpose is to realize the optical disk device that was used.
【００１４】
【課題を解決するための手段】
上記目的を達成するため本発明の第１の手段は、光ビームを光ディスク上に集光させる対物レンズと、
該対物レンズをその光軸方向に駆動するためのフォーカッシングコイルなどの第１の駆動コイルと、
前記対物レンズをその光軸と直角方向に駆動するためのトラッキングコイルなどの第２の駆動コイルと、
前記対物レンズを前記光ディスク半径方向に傾動駆動する傾動駆動コイルと、
前記対物レンズを保持するレンズホルダと、
前記第１、第２の駆動コイル、傾動駆動コイルに対して磁束を発生させるためのマグネッと、
前記対物レンズ，レンズホルダ，第１、第２の駆動コイル，傾動駆動コイルを含む可動部に一端が固定されてその可動部を弾性支持すると共に第１、第２の駆動コイル，傾動駆動コイルにそれぞれ電流を供給する６本の導電性弾性支持部材と、
該弾性支持部材の他端を固定する固定部とを備えたことを特徴とするものである。 0014.
[Means for solving problems]
In order to achieve the above object, the first means of the present invention includes an objective lens that concentrates a light beam on an optical disc, and an objective lens.
A first drive coil such as a focusing coil for driving the objective lens in the optical axis direction, and
A second drive coil such as a tracking coil for driving the objective lens in a direction perpendicular to the optical axis, and
A tilting drive coil that tilts and drives the objective lens in the radial direction of the optical disc, and
A lens holder that holds the objective lens and
A magnet for generating magnetic flux with respect to the first and second drive coils and the tilt drive coil,
One end is fixed to a movable part including the objective lens, a lens holder, the first and second drive coils, and a tilt drive coil to elastically support the movable part, and the first and second drive coils and the tilt drive coil. Six conductive elastic support members that each supply electric current,
It is characterized by having a fixing portion for fixing the other end of the elastic support member.
【００１５】
本発明の第２の手段は前記第１の手段において、前記マグネットの内、少なくとも２個のマグネットが光ディスクの半径方向に配置されていることを特徴とするものである。 0015.
The second means of the present invention is characterized in that, in the first means, at least two magnets among the magnets are arranged in the radial direction of the optical disk.
【００１６】
本発明の第３の手段は前記第２の手段において、前記２個のマグネットが傾動駆動用のマグネットであり、当該マグネットから発生する磁束と前記傾動駆動コイルを流れる電流とにより前記対物レンズに対する傾動駆動力が発生するように構成されていることを特徴とするものである。 0016.
In the second means of the present invention, the two magnets are magnets for tilting drive, and the magnetic flux generated from the magnets and the current flowing through the tilting drive coil cause tilting with respect to the objective lens. It is characterized in that it is configured to generate a driving force.
【００１７】
本発明の第４の手段は前記第１の手段において、前記６本の弾性支持部材が、前記可動部の対物レンズの光軸方向において前記光ディスク側に４本、前記光ディスクとは反対側に２本、それぞれ配置したことを特徴とするとするものである。 [0017]
The fourth means of the present invention is the first means, in which the six elastic support members are four on the optical disk side in the optical axis direction of the objective lens of the movable portion and two on the side opposite to the optical disk. The feature is that each book is arranged.
【００１８】
本発明の第５の手段は前記第１の手段において、前記６本の弾性支持部材の内、少なくとも２本の弾性支持部材の一部にコイルバネ状部分を有したことを特徴とするとするものである。 0018
A fifth means of the present invention is characterized in that, in the first means , at least two of the six elastic support members have a coil spring-like portion. Is.
【００１９】
本発明の第６の手段は前記第１の手段において、前記６本の弾性支持部材の内、少なくとも２本の弾性支持部材の可動部側での固定位置と前記固定部側での固定位置との距離が、他の弾性支持部材と異なることを特徴とするものである。 0019
In the first means, the sixth means of the present invention includes a fixed position of at least two elastic support members on the movable portion side and a fixed position on the fixed portion side of the six elastic support members. Is characterized in that the distance is different from other elastic support members.
【００２０】
本発明の第７の手段は、光ビームを光ディスク上に集光させるための対物レンズを駆動する対物レンズ駆動装置を備えた光ディスク装置において、前記対物レンズ駆動装置が前記第１の手段ないし第６の手段のいずれかの対物レンズ駆動装置であることを特徴とするものである。 0020
A seventh means of the present invention is an optical disk device including an objective lens driving device for driving an objective lens for condensing a light beam on an optical disk, wherein the objective lens driving device is the first means to the sixth means. It is characterized in that it is an objective lens driving device according to any one of the above means.
【００２１】
本発明の第８の手段は前記第７の手段において、光ディスクから読み取った信号からジッタ−量を算出し、このジッタ−量を小さくするように傾動駆動信号が生成する傾動駆動回路を設け、この傾動駆動回路からの信号により前記傾動駆動コイルに電流を供給することを特徴とするものである。 0021.
The eighth means of the present invention provides a tilt drive circuit in the seventh means, which calculates a jitter amount from a signal read from an optical disk and generates a tilt drive signal so as to reduce the jitter amount. It is characterized in that a current is supplied to the tilt drive coil by a signal from the tilt drive circuit.
Claims (8)
該対物レンズをその光軸方向に駆動するための第１の駆動コイルと、
前記対物レンズをその光軸と直角方向に駆動するための第２の駆動コイルと、
前記対物レンズを前記光ディスク半径方向に傾動駆動する傾動駆動コイルと、
前記対物レンズを保持するレンズホルダと、
前記第１、第２の駆動コイル、傾動駆動コイルに対して磁束を発生させるためのマグネッと、
前記対物レンズ，レンズホルダ，第１、第２の駆動コイル，傾動駆動コイルを含む可動部に一端が固定されてその可動部を弾性支持すると共に第１、第２の駆動コイル，傾動駆動コイルにそれぞれ電流を供給する６本の導電性弾性支持部材と、
該弾性支持部材の他端を固定する固定部とを備えたことを特徴とする対物レンズ駆動装置。An objective lens for focusing the light beam on the optical disc;
A first drive coil for driving the objective lens in the optical axis direction;
A second drive coil for driving the objective lens in a direction perpendicular to its optical axis;
A tilting drive coil for tilting and driving the objective lens in the radial direction of the optical disc;
A lens holder for holding the objective lens;
A magnet for generating magnetic flux to the first and second drive coils and the tilt drive coil;
One end is fixed to the movable part including the objective lens, the lens holder, the first and second drive coils, and the tilting drive coil, and the movable part is elastically supported and the first and second drive coils and the tilting drive coil 6 conductive elastic supporting members for supplying current respectively;
And a fixing portion for fixing the other end of the elastic support member .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26913699A JP3658526B2 (en) | 1999-09-22 | 1999-09-22 | Objective lens driving device and optical disk device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26913699A JP3658526B2 (en) | 1999-09-22 | 1999-09-22 | Objective lens driving device and optical disk device using the same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001093177A JP2001093177A (en) | 2001-04-06 |
| JP2001093177A5 true JP2001093177A5 (en) | 2004-11-25 |
| JP3658526B2 JP3658526B2 (en) | 2005-06-08 |
Family
ID=17468202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26913699A Expired - Lifetime JP3658526B2 (en) | 1999-09-22 | 1999-09-22 | Objective lens driving device and optical disk device using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3658526B2 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100436720B1 (en) * | 2001-08-28 | 2004-06-22 | 삼성전기주식회사 | Optical pick-up actuator |
| JP2003109234A (en) | 2001-09-28 | 2003-04-11 | Teac Corp | Optical pickup device |
| KR100881666B1 (en) | 2002-07-09 | 2009-02-06 | 삼성전자주식회사 | Objective lens driving apparatus for optical pickup |
| JP2004145989A (en) | 2002-10-25 | 2004-05-20 | Matsushita Electric Ind Co Ltd | Objective lens drive unit |
| JP3821105B2 (en) | 2003-02-28 | 2006-09-13 | 三菱電機株式会社 | Optical means driving device |
| JP2005038537A (en) | 2003-07-17 | 2005-02-10 | Mitsumi Electric Co Ltd | Objective lens driving device |
| JP2005158161A (en) * | 2003-11-26 | 2005-06-16 | Mitsumi Electric Co Ltd | Objective lens driving apparatus |
| EP1544852A3 (en) | 2003-12-19 | 2006-08-02 | Mitsumi Electric Co., Ltd. | Objective lens driving device having damper portions capable of obtaining a moderate damping effect |
| JPWO2005096288A1 (en) * | 2004-03-30 | 2008-07-31 | パイオニア株式会社 | Pickup actuator, pickup device, recording medium driving device, and method for manufacturing pickup actuator |
| WO2005096287A1 (en) | 2004-03-30 | 2005-10-13 | Pioneer Corporation | Actuator for pickup, pickup device, recording medium drive device, and method of manufacturing actuator for pickup |
| JP2006065971A (en) | 2004-08-27 | 2006-03-09 | Mitsumi Electric Co Ltd | Optical pickup |
| JP2006066013A (en) | 2004-08-30 | 2006-03-09 | Mitsumi Electric Co Ltd | Objective lens holder and objective lens driving device |
| JP2006066016A (en) | 2004-08-30 | 2006-03-09 | Mitsumi Electric Co Ltd | Objective lens driving device |
| JP4693510B2 (en) * | 2005-06-08 | 2011-06-01 | 三洋電機株式会社 | Objective lens drive |
-
1999
- 1999-09-22 JP JP26913699A patent/JP3658526B2/en not_active Expired - Lifetime
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